Correct Answer: A

Rationale: The best thing to do next is to turn off the fan immediately. The fact that the electric fan is stopping every now and then and sparking at intervals indicates a potential electrical issue or malfunction. This situation poses a safety hazard as it increases the risk of an electrical fire or damage to the fan. Turning off the fan immediately will help prevent any further damage or potential danger. After turning off the fan, it would be advisable to call for maintenance to inspect and repair the fan to ensure it is safe to use again.

Correct Answer: D

Rationale: Fats are essential for the absorption of vitamin K in the body. Vitamin K is a fat-soluble vitamin, meaning it is better absorbed in the presence of dietary fats. In the case of postpartum hemorrhage, adequate levels of vitamin K are crucial for proper blood clotting. Thus, incorporating fats in the diet can help ensure sufficient absorption of vitamin K, which can be beneficial in preventing complications related to hemorrhage.

Correct Answer: B

Rationale: Uterine hyperstimulation, also known as tachysystole, is a condition characterized by frequent and intense uterine contractions with minimal rest intervals. This can lead to maternal fatigue and decreased fetal oxygenation due to the insufficient time for the uterus to relax and refill with oxygenated blood between contractions. Uterine hyperstimulation can be caused by various factors such as excessive use of uterotonics (oxytocin or prostaglandins), improper labor induction techniques, or maternal conditions like previous uterine surgery. It is essential for the nurse to assess for signs of uterine hyperstimulation and take appropriate interventions to prevent potential complications for both the mother and the baby.

Correct Answer: C

Rationale: Autonomy is the ethical principle that upholds an individual's right to make decisions about their own medical treatment, free from coercion or undue influence. In this scenario, the 70-year-old patient has voluntarily decided not to have the pacemaker inserted despite the physician's recommendation. The fact that the decision is respected by the family further highlights the importance of autonomy in this situation. Respecting the patient's right to make choices regarding their own healthcare, even if it goes against medical advice, demonstrates a commitment to autonomy as an ethical principle.

Correct Answer: A

Rationale: In collecting a sputum specimen, the nurse should instruct Roy to breathe slowly, cough, and then expectorate into the specimen container. This ensures that the sputum sample is collected from the lower respiratory tract where it is most likely to contain pathogens or other relevant substances for analysis. By instructing Roy to breathe slowly, it helps him to take deep breaths and effectively cough to produce a good sputum sample. Additionally, asking him to expectorate directly into the specimen container helps prevent contamination from saliva or other sources, ensuring the accuracy of the specimen collected for testing.